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Finding the Fourth Proportional to 329,689.80, 494,486.10 and 93,056.40

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Solution

The fourth proportional to 329,689.80, 494,486.10 and 93,056.40 is: 139,570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,689.80 : 494,486.10 = 93,056.40 : x
  2. Step 2: Convert to fraction form
    329,689.80/494,486.10 = 93,056.40/x
  3. Step 3: Cross multiply
    329,689.80x = 494,486.10 × 93,056.40
  4. Step 4: Simplify right side
    329,689.80x = 46,015,096,316.04
  5. Step 5: Solve for x
    x = 46,015,096,316.04/329,689.80
  6. Step 6: Final answer
    x = 139,570.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.